Do Schär and Ospina incidents show football has a concussion problem?

Breakthrough on a concussion test appears close but in the meantime there are questions about the treatment of head injuries

Risk is part of life’s fabric and a big part of football’s attraction but when it comes to suspected concussion, even the most calculated gambles have no place in the game.

Stringent protocols adopted by the Football Association perform a largely excellent job in protecting players with possible head injuries, while Fifa and Uefa competitions fall under the umbrella of separate, but broadly similar, guidelines.